Thank you for your advice.
I went to Walmart and looked in their hunting section and found a lot of cheap ones! I picked up a five of their 3-pack 24 hour heatpacks. I don't need them for shipping, just for a transport from my house to my college and back. I picked up a bunch of extras because I want them for power outtages too.
It was a lot cheaper than buying the ones that are being sold in classifieds here, especially when you consider that I didn't have to pay shipping!
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~Sara~
"If you look down on me, I am evil, If you look up to me, I am God, if you look straight at me, I Am you"
-Charles Manson